From a random guest of cluster worlds, Dana turns into the fiancée of the one who will unite non-humans in a fight against monsters. In just a few days, she and Amіar have to meet the ghosts of the past, find the missing ruler of the trees, learn a spell that kills the immortal, and restore the honest name of a genius who has been considered insane for years. On their side are devoted friends and a found family—but time to prepare is running out fast, and the black dog Aид is already at the door.